From 45b2af12d08c7eff064caaac2d44268711a5141a Mon Sep 17 00:00:00 2001
From: friehmaen <git@mail.philip.xers.de>
Date: Thu, 30 Jan 2025 07:46:14 +0100
Subject: [PATCH] dns/ddclient: Add __IPV6PREFIX__ replace for custom urls if
 address is IPv6

---
 .../app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml    | 1 +
 .../src/opnsense/scripts/ddclient/lib/account/dyndns2.py       | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml b/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
index eb0fb768e4..60879a1eb6 100644
--- a/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
+++ b/dns/ddclient/src/opnsense/mvc/app/controllers/OPNsense/DynDNS/forms/dialogAccount.xml
@@ -30,6 +30,7 @@
         <help>DynDNS Server hostname or uri to use (depending on the protocol).
          When a URI is provided, the tag __MYIP__ will be replaced with the current detected address for this service
          and __HOSTNAME__ will contain the (comma separated) list of hostnames provided.
+         If the current address is an IPv6 the tag __IPV6PREFIX__ will be replaced with the /64 prefix of the current address.
          </help>
         <style>optional_setting service_custom</style>
     </field>
diff --git a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
index e93d0e5abe..46331d6d94 100755
--- a/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
+++ b/dns/ddclient/src/opnsense/scripts/ddclient/lib/account/dyndns2.py
@@ -23,6 +23,7 @@
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     POSSIBILITY OF SUCH DAMAGE.
 """
+import ipaddress
 import syslog
 import requests
 from requests.auth import HTTPBasicAuth
@@ -71,6 +72,8 @@ def execute(self):
                 url = self.settings.get('server')
                 url = url.replace('__MYIP__', self.current_address)
                 url = url.replace('__HOSTNAME__', self.settings.get('hostnames'))
+                if self.current_address.find(':') > 0:
+                    url = url.replace('__IPV6PREFIX__', str(ipaddress.ip_network("%s/64" % self.current_address, strict=False)))
                 req = requests.request(
                     method=protocol,
                     url=url,